Center plate for railway oars



(No Model.)

B. W. M. HUGHES. CENTER PLATE FOR. RAILWAY OARS.

No. 408,032. atnted July 30, 1889.

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UNITED STATES PATENT OFFICE.

EDXVARD VILLIAM MACKENZIE HUGHES, OF CHICAGO, TLLINOI S, ASSIGNOR TO THE FOX SOLID PRESSED STEEL COMPANY, OF SAME PLACE.

CENTER PLATE FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 408,032, dated July 30, 1889.

Application filed May 23, 1889. Serial No. 311,878. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD WILLIAM MAO- KENZIE HUGHES, of Chicago, Cook county, Illinois, have invented a new and useful Improvement in Center Plates, of which the following is afull,true, and exact description, reference being had to the accompanying drawing.

This invention relates to an improvement in centerplates especially as applicable to trucks;

i0 and it consists in making said center plates of pressed steel fitting each other in part, but at the same time so shaped as to allow a rolling or rocking motion of oneplate over, the other.

My invention will be readily understood from the accompanying drawing, which is a vertical section through my two plates A B.

The plate A consists, essentially, of the spherical-shaped portion C and an inside cy- 2o lindrical portion D. The plate B consists, es-

sentially, of the spherical-shaped portion E, fitting the surface C, and the inner cylindrical part F, located within the exterior cylindrical part D. Between the part-s F and D 2 5 a space G is left, as indicated. These center plates are made of pressed steel pressed between dies, so as to make them exactly-fit one upon the other and secure perfect continuity of bearing-surface between E and C, while, on the other hand, the parts D and F being separated from each other by the space G, the parts E and C may roll upon each other within the limits of that space, as can be clearly seen from the drawing. The spherical surfaces allow a rolling motion in any direction, like a universal joint. Of course their surfaces do not require to be exactly spherical, but should be so shaped as to allow the sliding of one over the other.

WVhat I claim as my invention, and desire to secure by Letters Patent, is

The combination of the pressed-steel center plates A and B, having" contact wearing surfaces E C and cylindrical portions F D, the said cylindrical portions being separated 4-5 by the space C, so as to allow the rocking of the plate A upon the plate B in any direction, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two 5r subscribing witnesses.

EDWARD WILLIAM MACKENZIE HUGHES.

Witnesses:

WM. Voss, W. S. HARTWELL. 

